OPA549 GC for Car

abid_rehan · 13th June 2005, 03:15 AM

Hi guys:
I have lots of OPA549 chips lying around and was thinking of designing a GC for subwoofer to be used in my car, OPA549 data sheet suggests that it could be operated via single supply, as I am a usual lamer, therefore i was looking forward if anyone in this forum could guide me as how to make a GC with OPA549 with single supply of 12Volts?
Any help will be appreciated.

bigmike216 · 13th June 2005, 03:49 AM

it can certainly be done, but at 12v single supply, you're not going to get more than a few watts..

mod_evil · 13th June 2005, 04:13 AM

Hi friend, how i found rms in my OPA549T amp?

Sashi · 13th June 2005, 04:55 AM

Quote:

Originally posted by mod_evil
Hi friend, how i found rms in my OPA549T amp?

Hi Friend,look here
OPA541 power rating

mod_evil · 13th June 2005, 05:21 AM

Ohhh friend, thanks for the link! When i paraleling 2 OPA549 the W drouble?

bigmike216 · 13th June 2005, 05:23 AM

the wattage won't double when you parllel, unless you're driving low loads. Bridging will though.

abid_rehan · 13th June 2005, 03:42 PM

Well I was planning to use three OPA549s in bridge parallel mode as mentioned in data sheet, and it will deliver some nice output, but my question remains the same
HOW TO USE 12volt supply?
any ideas/ suggestions?

mod_evil · 13th June 2005, 03:57 PM

single supply opa549

You need connect the V- to the GROUND...

Thanks.

abid_rehan · 13th June 2005, 04:02 PM

thanks mod_evil , link that u have posted is of great help, let me work out the schematics for bridged parallel woofer for car and i ll post the same here.
Rehan

mod_evil · 13th June 2005, 04:04 PM

Okay... Can you post in here the schematic of your bridged parallel OPA549?

13th June 2005, 03:15 AM	#1
abid_rehan diyAudio Member Join Date: Mar 2007	OPA549 GC for Car Hi guys: I have lots of OPA549 chips lying around and was thinking of designing a GC for subwoofer to be used in my car, OPA549 data sheet suggests that it could be operated via single supply, as I am a usual lamer, therefore i was looking forward if anyone in this forum could guide me as how to make a GC with OPA549 with single supply of 12Volts? Any help will be appreciated.

13th June 2005, 04:13 AM	#3
mod_evil diyAudio Member Join Date: Dec 2004 Location: Rio	Hi friend, how i found rms in my OPA549T amp? __________________ Brazilian Tube Amp Builder.

13th June 2005, 05:21 AM	#5
mod_evil diyAudio Member Join Date: Dec 2004 Location: Rio	Ohhh friend, thanks for the link! When i paraleling 2 OPA549 the W drouble? __________________ Brazilian Tube Amp Builder.

13th June 2005, 03:42 PM	#7
abid_rehan diyAudio Member Join Date: Mar 2007	OPA549 Well I was planning to use three OPA549s in bridge parallel mode as mentioned in data sheet, and it will deliver some nice output, but my question remains the same HOW TO USE 12volt supply? any ideas/ suggestions?

13th June 2005, 03:57 PM	#8
mod_evil diyAudio Member Join Date: Dec 2004 Location: Rio	single supply opa549 You need connect the V- to the GROUND... Thanks. __________________ Brazilian Tube Amp Builder.


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13th June 2005, 03:49 AM	#2
bigmike216 diyAudio Member Join Date: Jul 2004 Location: BC, Canada	it can certainly be done, but at 12v single supply, you're not going to get more than a few watts..

13th June 2005, 05:23 AM	#6
bigmike216 diyAudio Member Join Date: Jul 2004 Location: BC, Canada	the wattage won't double when you parllel, unless you're driving low loads. Bridging will though.

13th June 2005, 04:02 PM	#9
abid_rehan diyAudio Member Join Date: Mar 2007	thanks thanks mod_evil , link that u have posted is of great help, let me work out the schematics for bridged parallel woofer for car and i ll post the same here. Rehan

13th June 2005, 04:04 PM	#10
mod_evil diyAudio Member Join Date: Dec 2004 Location: Rio	Okay... Can you post in here the schematic of your bridged parallel OPA549? __________________ Brazilian Tube Amp Builder.

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